SSM 49761

Service Bulletin Details

Public Details for: SSM 49761

Some 2011-2021 mustang and f-150 vehicles equipped with a 5.0l engine may exhibit a ticking noise at idle after an engine oil change. It is often referred to as typewriter noise because of its similarity to the sound of a mechanical typewri

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SSM 49761: 2011-2021 Mustang/F-150 - 5.0L - Tick Tap And/Or Typewriter Noise
At Idle
Some 2011-2021 Mustang and F-150 vehicles equipped with a 5.0L engine may exhibit a ticking noise at
idle after an engine oil change. It is often referred to as typewriter noise because of its similarity to the
sound of a mechanical typewriter. The noise in question may be heard on some engines when engine
temperatures reach 150ŒF (65ŒC) or higher and engine speed is at idle up to approximately 1700
RPMs. It can typically be heard at the front wheel well and is often isolated to the transmission bell
housing or oil pan area. The typewriter noise is not detrimental to the engine function or durability and
has no short or long term effects on the engine. This an operating characteristic of the 5.0L engine and
no repairs should be attempted.
Vehicles:
2011-2014
2015-2020
2021
2011-2014
2015-2021
F-150 (2004-2014), Mark LT (F6)
F-150 (P552) (FC)
F-150 (P702) (FD)
Mustang (S197) (ZF)
Mustang (S550) (ZG)